Coal and slate separator.



HI GOAL A APPLIOA MATHEWSON.

ND SLATE SEPARATOR.

TION FILED JAN. 20, 1908.

Patented May 11, 1909.

uNrrn srarns HERBERT MATHEWSON, or snnNANDoAH, PENNSYLVANIA.

COAL AND SLATE snrnnn'ron.

Application filed January 20, 1908; Serial No; 411,761;

To all whom it may concern:

Be it known that I, HERBERT MATHEW- soN, a citizen of the United States, residin at Shenandoah, in the county of Schuylkifi and State of Pennsylvania, have invented certain new and useful Improvements in Coal and Slate Separators, of which the following is a specification.

My invention relates to coal and slate separators and particularly to that class known as screens.

The object of my invention is to produce a screen of the type described which will effectively separate the coal from the slate.

Furthermore, the object of my invention is to produce a coal and slate separator-' screen having means for adjusting plates.

Finally, the object of the invention is to produce a coal and slate separator screen that may be adjusted to effectively separate slate from coal of difierent sizes.

With the foregoing and other objects in view, the invention consists in the details of construction and in the arrangements and combinations of parts to be hereinafter more fully set forth and particularly pointed out in the claims.

In describing the invention in detail, reference will be had to the accompanying drawing, forming part' of this specification, wherein like characters denote corresponding parts in the several views, and in which- Figure 1 is a perspective view of a coal and slate separator screen in accordance with my invention and Fig. 2, is a sectional View on the line XX of Fig.1.

In the drawings, 1 indicates a metallic plate having upturned marginal side edges,

the

2, 2, whereby the screen may be connected" to any operating mechanism. The upturned side edges are provided with side plates, 3, 3, which extend at an angle toward the longitudinal center of the flat por tion of the screen and by which the coal and.

slate as it moves over the screen, is con tinually thrown toward the center of the screen, and while I have only shown one of such plates attached on-each side of the screen,I do not limit myself to such construction as there may be a plurality of the same attached to the upturned flanges ace cording to the length of the screen.

The flat portion of the screen is provided" With a number of openings 4, arranged in a series of transverse rows, whereby the open Specification of Letters Pate'ntf Patented May 11, 1eo9.

ings of one row are between the openings in the next row. The Openings are provided with cover plates 5, which are attached at one end to themetallic plate by means of bolts 6, which extend through the metallic plate and on which a collar 7 is placed above the plate 5 and is retained in place by a nut threaded on the bolt. The bolts and collar extend above the plate, and by such arrange ment the coal and slate is evenly distributed over the screen. The lower or larger end of the plate 5 is held 1n an elevated osition above the openings by means of a ho t 8, ex-

tending through the metallic plate and on which rests a collar 9, and on this collar rests the plate 5 and it is secured thereon by means of a nut threaded on the bolt.

It will be observed that the collars 9, may be of different length or the collar 7 may be used in the same manner and by having collars of dilierent length, the openings in the metallic plate may be adjusted to any desired width or height.

In operation of my device, the coal and slate will be caused to travel over the screen and the slate," owing to its thin and flat structure will fall through the o enings, and the coal owing to its round or um y structure will be delivered at the end 0 the screen,

ree from slate.

The construction, operation and advantages, it is thought will be understood from the foregoing description, it being noted that various changes may be made in the proportions and detail of construction, Without departing "from the scope of my invention. 7

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a coal and slate separator comprising a fiat portion provided with a plurality of openings arranged in transverse rows, the openings of one row being between the openings in the next row, plates above said openings, a series of bolts securing the plates at one end to the flat portion and extending above said plates, collars on the bolts above the plates and a second series of bolts securing the opposite ends of the plates to the flat portion and collars on the second series of bolts between theplates and the fiat portion substantially as described.

' 2. .In a coal and slate separator, a flat metal plate provided with a plurality of openings arranged in transverse rows, the openings of one row being between the openings of the next roW, said flat metal plate having 1 fiat inetal plate, collars on the second series upturned side edges provided With plates eX- of bolts betweenthe plates and the flat metal 7 I tending at an angle toward the longitudinal plate substantially as described.

center of said flat metal plate, plates above In testimony whereof I alfix my signature 5 said openings, a series of bolts securing the 1 in presence of two Witnesses.

plates at one end to the flat metal plate and HERBERT MATHEVVSON.

extending above the plates, collars on the lVitnesses:

bolts above the plates, a series of bolts se 1 JosErH T. LYONS,

curing the opposite ends of the plates to the W. F. LYONs. 

